Robert Gibson Gray B.1904 Scotland D.1969 eastern general hospilal

Looking for information on the family of Robert Gibson gray who moved to Toronto.He married Mary Ann Buchan b.1903 "known as Annie" in Falkirk,Scotland,D.1972 Toronto they had 4 children,Robert, Kenneth,( who were twins )James and Margaret "that I know of".Any information on any of the above would be great as the family in Scotland have lost contact since the death of our Aunt Annie.RegardsDave Wedderburn Buchan.